Slider for separable fasteners



March 12, 1940. D, B, GMQRE 2,193,761

SLIDER FOR SEPARABLE FASTENERS Filed July 2, 1937 INVENTOR. DeLberf .B.Gilmore ORNEYS.

Patented Mar. 12, 1940 SLIDER FOR SEPARABLE FASTENERS Delbert B.Gilmore, Erie, Pa., assignor to Talon, Inc., a corporation ofPennsylvania Application July 2, 1937, Serial No. 151,615

7 Claims.

My invention relates to sliders for separable fasteners and to methodsof making the same.

.It is desirable to form such sliders from sheet material becausematerial in that form is cheapest and the operations can be carried onin mass production very easily. A plain sheet metal blank with a narrowbend must be reinforced in some manner and extraneous means, such as arivet, have usually been provided in such sheet 10 metal sliders, seefor example, Sundback 1,566,-

According to my invention, I dispense with the necessity of extraneousmeans and provide an improved reinforcing connection between the wingswhich is an integral part of the sheet metal blank and which requires inthis form, merely simple shearing and bending operations. I am awarethat integral rivet portions have been suggested heretofore butreinforcing elements in my 20 improved slider are formed in a differentmanner. It is a simple construction having the desired qualities ofneatness, strength and durability.

In the accompanying drawing, I have illus- 25 trated one embodiment ofmy invention and some modifications thereof which my invention mayassume in practice. In this drawing:

Fig. 1 is a plan view of a completely formed slider blank;

Fig. 2 is a plan view of a completely bent slider;

Fig. 3 is a cross-sectional view taken on line 33 of Fig. 2;

Fig. 4 is a cross-sectional view taken on line 5-8 of Fig. 2;

i Fig. 5 is a cross-sectional view similar to Fig. 3

showing a modified form of bending the slider;

Fig. '6 is a plan View of a modified form of completely formed sliderblank;

Fig. '7 is a plan view of a completely bent slider 44; of the modifiedslider blank;

Fig. 8 is a cross-sectional view taken on line 8-4; of Fig. 7; and

Fig. 9 is an end view of the completely bent slider shown in Fig. '7.

The slider illustrated is for use on conventional slide fasteners now ingeneral use, and commonly called "zippers. Such fasteners have opposedseries of interlocking fastener elements arranged in spacedrelation'along adjacent edges of a pair 50 "of tape stringers and aremoved into and .out

of cooperating relation by mwns of the slider.

The blank shown in Fig. 1 consists @f two wings ill, ll connected by apair of narrow portions I2 which are to form the neck, and a narrowstrip l3 which is to form the reinforcing connection. The narrow'stripI3 is formed from the medial longitudinal portion of the blank andextends from an intermediate point in one blank between the neckportions I! to an intermediate point in the other blank. The wings have6 side flanges it along their opposite edges for guiding the fastenermembers. The connectin portion 13 has its opposite parallel edgesnotched as at I6; I'I which are adapted to receive the edges of thewings and neck upon bending the slider to shape.

Having prepared the blank in this manner it is now ready for bending andis bent on a line half way between the ends of the blank so that thereis produced a slider having spaced apart 15 wings l0 and H integrallyconnected by U-bent portions, as shown in Figs. 2, 3 and 4. The narrowstrip I3 is then bent upwardly and inwardly between the wings until itis substantially perpendicular to the plane of the wings with part ofthe material extending above the top wing to provide the pull attachingloop 68, leaving the two narrow loop portions l9 which together comprisethe neck. The narrow loop portions IQ of the neck are then bent togetherinto the notches l6, ll of the connecting portions to complete thebending of the slider. The notches l6 and ii form the shoulders it whichextend over the surface of the top wing to keep the wings from spreadingapart under stress.

'I'he slider is now ready for use and consists of two wings it and H,spaced apart to provide a channel to receive fastener members with theconnecting portion i3 acting as a combined spreading portion forseparating the fastener members and a reinforcing connection spaced at apoint from the folded neck to reinforce the slider against all normalbending stresses.

The material of the neck may be, if desired, indented inwardly as at 20in Fig. 5, against 40 the back side of the connecting portion l3 to helphold the connecting portion in position and maintain the wings in spacedrelation. This tends to further reinforce the slider and, of course,increase its strength.

In addition, in the blank shown in Fig. 6, I provide laterally extendingtabs 2i on each side of the neck midway between the wings. Upon bendingthe slider blank these tabs are bent inwardly toward each otherbetween,the wings and into the notches ll around the connecting portionl3, as shown in Figs. 7, 8 and 9. These tabs keep the wings spaced apartand act as spreading and guiding portions for the fastener elements intheir travel through the slider.

While I have shown and described in this application, one embodiment andseveral modifications thereof which my invention may assume in practice,it will be understood that this embodiment and the modifications aremerely for the purposes of illustration and description, and thatvarious other forms may be devised within the scope of my invention asset forth in the appended claims,

What I claim as my invention is:

1. A slider for slide fasteners consisting of a single piece of sheetmaterial having spaced apart parallel wings, a U-s'haped neck integrallyuniting said wings at one end, a reinforcing connection for said wingsat the spaced apart portions thereof spaced from said neck and integralwith both of said wings.

2. A slider for slide fasteners of the class described, consistingwholly of a single piece of sheet material having spaced apart parallelwings connected by a U-shaped portion at one end, a connection betweensaid wings in the medial portion thereof spaced from the U-shapedportion and integrally joined at opposite ends with the wings.

3. A slider for slide fasteners of the class described, consistingwholly of a single piece of sheet material having spaced parallel wingsconnected by a U-shaped neck at one end, a connection between the wingscomprising a portion disposed substantially perpendicular to saidparallel wings and integrally joined at its opposite ends with both saidwings a considerable distance away from the neck.

4. A slider for slide fasteners of the class described, consistingwholly of a single piece of sheet material having spaced parallel wingsconnected by a neck at one end, a connection between the wingscomprising a portion substantially perpendicular to said parallel wingsand integrally joined at its opposite ends with both said wings aconsiderable distance away from the neck, said connection extendingoutwardly of and forwardly over one of the wings to form a loop adaptedto support a slider pull.

5. A slider for slide fasteners of the class described, consistingwholly of a single piece of sheet metal joined together at one end by aU- shaped neck, an integral reinforcing connection joined at oppositeends with both said wings, the material forming the connection extendingupwardly above the top wing and forwardly to provide a loop, saidconnecting piece having shoulders bearing on the top surface of theupper wing to resist spreading forces.

6. A slider having the features defined in the preceding claim in whichintermediate portions of the U-shaped neck extend inwardly toward thelongitudinal medial line of the slider substantially in contact witheach other.

7. A slider as defined in claim 5 in which intermediate portions of theU-shaped neck extend inwardly toward the longitudinal medial line of theslider substantially in contact with each other, and tabs extending fromsaid neck and converging inwardly to said reinforcing connection.DELBERT B. GILMORE.

